package com.heima.comment.service.impl;

import com.heima.comment.service.CommentRepayService;
import com.heima.common.exception.CustException;
import com.heima.model.comment.dtos.CommentRepayDTO;
import com.heima.model.comment.dtos.CommentRepayLikeDTO;
import com.heima.model.comment.dtos.CommentRepaySaveDTO;
import com.heima.model.comment.pojos.ApComment;
import com.heima.model.comment.pojos.ApCommentRepay;
import com.heima.model.comment.pojos.ApCommentRepayLike;
import com.heima.model.comment.vo.ApCommentRepayVo;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.threadlocal.AppThreadLocalUtils;
import com.heima.model.user.pojos.ApUser;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Sort;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.stereotype.Service;

import java.util.*;

@Service
@Slf4j
public class CommentRepayServiceImpl implements CommentRepayService {

    @Autowired
    MongoTemplate mongoTemplate;
    @Override
    public ResponseResult loadCommentRepay(CommentRepayDTO dto) {
        //1. 校验参数

        //   评论id不能为空  size为null 或 0 设置为10  最小日期为空 设置为当前
        //1. 参数校验
        if(dto == null){
            CustException.cust(AppHttpCodeEnum.PARAM_INVALID);
        }
        //   校验文章id
        //   校验size
        Integer size = dto.getSize();
        if(size == null || size==0){
            size = 10;
        }
        dto.setSize(size);
        if(dto.getMinDate() == null){
            dto.setMinDate(new Date());
        }
        //2. 条件查询评论回复信息
        //​	条件:  commentId = 评论id and createdTime 小于 minDate  创建时间 降序  limit size

        Query query = Query.query(Criteria.where("commentId").is(dto.getCommentId()).and("createdTime").lt(dto.getMinDate())).limit(dto.getSize()).with(Sort.by(Sort.Direction.DESC,"createdTime"));
        List<ApCommentRepay> apCommentRepays = mongoTemplate.find(query, ApCommentRepay.class);

//        List<String> collect = comments.stream().map(o -> o.getId()).collect(Collectors.toList());
        //3. 检查是否登录
        //​	3.1 如果未登录直接 返回评论回复列表
        ApUser apUser = AppThreadLocalUtils.getUser();
        if(apUser == null){
            return ResponseResult.okResult(apCommentRepays);
        }
        //​	3.2 如果登录，需要判断哪些回复点过赞
        //​	     基于当前列表 回复id集合  及  登录人id 查询回复点赞列表
        //​	     遍历 当前回复列表，将每一个回复信息 封装成 vo
        //​	     判断当前回复id 在点赞信息中是否存在，如果存在 operation设置为0 不存在不做处理
        ArrayList<ApCommentRepayVo> repayVos = new ArrayList<>();
        for (ApCommentRepay apCommentRepay : apCommentRepays) {
            ApCommentRepayVo repayVo = new ApCommentRepayVo();
            BeanUtils.copyProperties(apCommentRepay,repayVo);
            Query query1 = Query.query(Criteria.where("commentRepayId").is(apCommentRepay.getId()).and("authorId").is(apUser.getId()));
            ApCommentRepayLike one = mongoTemplate.findOne(query1, ApCommentRepayLike.class);
            if (one !=null){
                repayVo.setOperation((short)0);
            }
            repayVos.add(repayVo);
        }
        return ResponseResult.okResult(repayVos);
    }


    //保存评论回复
    @Override
    public ResponseResult saveCommentRepay(CommentRepaySaveDTO dto) {
        //1. 参数校验:
        //  是否登录  评论id是否为空  内容是否为空  内容是否大于140个字符
        if(dto == null){
            CustException.cust(AppHttpCodeEnum.PARAM_INVALID);
    }
        ApUser user = AppThreadLocalUtils.getUser();
        if(user == null){
            CustException.cust(AppHttpCodeEnum.NEED_LOGIN);
        }
        //  回复内容安全校验
        //  ​     简单: 不校验      普通: 阿里云内容检查，有问题抛异常     困难：阿里云内容检查，有问题替换为**
        //2. 根据评论id查询评论信息  检查是否存在
        Query query = Query.query(Criteria.where("id").is(dto.getCommentId()));
        ApComment apComment = mongoTemplate.findOne(query, ApComment.class);
        if(apComment == null){
            CustException.cust(AppHttpCodeEnum.DATA_NOT_EXIST,"评论不存在");
        }
        //3. 保存评论回复信息
        ApCommentRepay apCommentRepay = new ApCommentRepay();
        apCommentRepay.setAuthorId(apComment.getAuthorId());
        apCommentRepay.setAuthorName(apComment.getAuthorName());
        apCommentRepay.setCommentId(dto.getCommentId());
        apCommentRepay.setContent(dto.getContent());
        apCommentRepay.setLikes(0);
        apCommentRepay.setCreatedTime(new Date());
        apCommentRepay.setUpdatedTime(new Date());
        mongoTemplate.save(apCommentRepay);
        apComment.setReply(apComment.getReply()+1);
        mongoTemplate.save(apComment);
        //4. 修改评论信息中回复数量 + 1
        return ResponseResult.okResult();
    }

    @Override
    public ResponseResult saveCommentRepayLike(CommentRepayLikeDTO dto) {
        //1. 校验参数
        //​       回复id不能为空   operation 必须 0 或 1
        ApUser user = AppThreadLocalUtils.getUser();
        if (user == null){
            CustException.cust(AppHttpCodeEnum.NEED_LOGIN,"没登录");
        }
        //​       校验登录  (必须登录)
        //​       校验回复信息是否存在
        Query query = Query.query(Criteria.where("id").is(dto.getCommentRepayId()).and("authorId").is(user.getId()));
        ApCommentRepay commentRepay = mongoTemplate.findOne(query, ApCommentRepay.class);
        Query query1 = Query.query(Criteria.where("authorId").is(user.getId()).and("commentRepayId").is(dto.getCommentRepayId()));
        ApCommentRepayLike commentRepayLike = mongoTemplate.findOne(query1, ApCommentRepayLike.class);
        //2. 如果是点赞  判断是否点过赞
        //​      点过赞提示请勿重复点赞
        if(commentRepayLike != null && dto.getOperation().intValue() == 0){
            CustException.cust(AppHttpCodeEnum.DATA_EXIST,"请勿重复点赞");
        }
        //​      未点过赞， 保存点赞信息
        // ​       并将回复信息的点赞数量字段+1
        if (dto.getOperation().intValue() == 0){
            commentRepayLike = new ApCommentRepayLike();
            commentRepayLike.setAuthorId(user.getId());
            commentRepayLike.setCommentRepayId(dto.getCommentRepayId());
            commentRepayLike.setOperation((short)0);
            mongoTemplate.save(commentRepayLike);
            commentRepay.setLikes(commentRepay.getLikes()+1);
            mongoTemplate.save(commentRepay);
        }else {
            //3. 如果是取消赞
            //​      删除点赞信息
            //​     并将回复信息的点赞数量字段
            mongoTemplate.remove(query1,ApCommentRepayLike.class);
            commentRepay.setLikes(commentRepay.getLikes()-1);
            mongoTemplate.save(commentRepay);
        }
        //4. 返回当前回复的最新点赞数量      数据的key:  likes
        //5. 返回结果时，需要返回点赞点赞数量  返回的key要求必须是:  likes
        Map map = new HashMap<>();
        map.put("likes",commentRepay.getLikes());
        return ResponseResult.okResult(map);
    }
}
